In her pussy

You said nothing but looked at her lower half.

Mera smiled: "Oh, I see."

She guided your penis into her vulva. Then she hugged you and pushed you on the bed.

Her insides gripped your manhood, making you both moan loudly as your hips moved together. Her breasts bounce freely, made you feel hornier.

Suddenly, she cried when moaning: "Oh, this feeling... itchy... so familiar... it's like... the time I conceived my first child... I'm ovulating."

You could feel her walls contracting against you, and feel your dick constantly hitting her cervix with every thrust, trying to **** itself inside her womb.

You both reached climax. You released loads of your little swimmers inside her.

Mira took a step back. Her finger touched the cum which was still dripping out of her pussy, then she raised her hand to look at it closely: "Your semen is so thick. There must be countless of your sperm invading my egg right now, but the procedure still requests me to test the number of your sperm by microscope."

"Then what you just did is a new procedure too?"

Mira was panic and turned back, only to see Riza leaned on the wall and looked at her with a smile.

"I..."

"Go to find your microscope. Your works here are done."